描述
140CRP93100
开关量输入／输出
通过标准的输入／输出接口可从传感器和开关（如按钮、限位开关等）及控制（开／关）设备（如指示灯、报警器、电动机起动器等）接收信号。典型的交流输入／输出信号为24～240V，直流输入／输出信号为5～240V。
尽管输入电路因制造厂家不同而不同，但有些特性是相同的。如用于消除错误信号的抖动电路；免于较大瞬态过电压的浪涌保护电路等。此外，大多数输入电路在高压电源输入和接口电路的控制逻辑部分之间都设有可选的隔离电路。
在评估离散输出时，应考虑熔丝、瞬时浪涌保护和电源与逻辑电路间的隔离电路。熔丝电路也许在开始时花费较多，但可能比在外部安装熔丝耗资要少。
模拟量输入／输出
模拟量输入／输出接口一般用来感知传感器产生的信号。这些接口可用于测量流量、温度和压力，并可用于控制电压或电流输出设备。这些接口的典型量程为－10～＋10V、0～＋10V、4～20mA或10～50mA。
一些制造厂家在PLC上设计有特殊模拟接口，因而可接收低电平信号，如RTD、热电偶等。一般来说，这类接口模块可用于接收同一模块上不同类型的热电偶或RTD混合信号。
特殊功能输人／输出
在选择一台PLC时，用户可能会面临一些特殊类型且不能用标准I/O实现的I/O限定如定位、快速输入、频率等 。此时用户应当考虑供销厂商是否提供有特殊的有助于最大限度减小控制作用的模块。有些特殊接口模块自身能处理一部分现场数据，从而使CPU从耗时的任务处理中解脱出来。
智能式输入／输出
当前，PLC的生产厂家相继推出了一些智能式的输入／输出模块。一般智能式输入／输出模块本身带有处理器，可对输入或输出信号作预先规定的处理，并将处理结果送入CPU或直接输出，这样可提高PLC的处理速度并节省存储器的容量。
智能式输入／输出模块有高速计数器（可作加法计数或减法计数）、凸轮模拟器（用作绝对编码输人）、带速度补偿的凸轮模拟器、单回路或多回路的PID调节器、ASCII／BASIC处理器、RS—232C／422接口模块等。表3归纳了选择I/O模块的一般规则。
PLC存储器类型及容量选择
PLC系统所用的存储器基本上由PROM、E-PROM及PAM三种类型组成，存储容量则随机器的大小变化，一般小型机的最大存储能力低于6kB，中型机的最大存储能力可达64kB，大型机的最大存储能力可上兆字节。使用时可以根据程序及数据的存储需要来选用合适的机型，必要时也可专门进行存储器的扩充设计。
PLC的存储器容量选择和计算的第一种方法是：根据编程使用的节点数精确计算存储器的实际使用容量。第二种为估算法，用户可根据控制规模和应用目的，按照表4的公式来估算。为了使用方便，一般应留有25%～30%的裕量，获取存储容量的最佳方法是生成程序，即用了多少字。知道每条指令所用的字数，用户便可确定准确的存储容量。表４同时给出了存储器容量的估算方法。
ABC11D-H2111 Rack Yokogawa Centum XL 1
AIP552 AIP552 Module Yokogawa Centum XL 2
CP21*A CP21*A Processor Card, 2 MB Yokogawa Centum XL 4
CP333D CP333D Module Yokogawa Centum XL Ask
CP99A*A CP99A *A Processor Card Yokogawa Centum XL Ask
CPL-6 CPL-6 Module Yokogawa Centum XL 4
DP97*A DP97 *A Display Processor Card Yokogawa Centum XL Ask
DP97*B DP97 *B Display Processor Card Yokogawa Centum XL Ask
DX11*A DX11 *A Duplex Control Card Yokogawa Centum XL 2
FC11*A FC11 *A Duplex Control Card Yokogawa Centum XL 2
FC311 FC311 Module Yokogawa Centum XL 1
FC81*A FC81 *A HF Bus Comm Control Card Yokogawa Centum XL 2
IP91*A Communication Module Yokogawa Centum XL 1
NC4*B NC4* B Nest Common Card Yokogawa Centum XL 14
PS33*A PS33 *A Station Power Supply Card -117Vac Yokogawa Centum XL 6
PS62*A PS62 *A Power Supply Yokogawa Centum XL 1
PS63*A PS63 *A Power Supply Unit Yokogawa Centum XL Ask
PS71*A PS71 *A Power Supply Yokogawa Centum XL 1
PW301 PW301 Power Module Yokogawa Centum XL 2
SI11*B SI11*B Station Internal Communication Card Yokogawa Centum XL 3
AS S919 Keyboard-Video Module Yokogawa microXL Ask
CP81B*B MOPS – MOPL Processor Card Yokogawa microXL 2
CP81B*C MOPS – MOPL Processor Card Yokogawa microXL 1
CP81E*A CP81E *A MOPS – MOPL Processor Card Yokogawa microXL 1
DP88*A DP88 *A MOPS – MOPL Display Card Yokogawa microXL 3
DP88*C DP88 *C MOPS – MOPL Display Card Yokogawa microXL 1
DP88*D DP88 *D MOPS – MOPL Display Card Yokogawa microXL Ask
DP88B*A DP88B *A MOPS – MOPL Display Card Yokogawa microXL 4
EN83*A EN83 *A Ethernet Network Card Yokogawa microXL 3
HD82*A HD82 *A Hard Drive Module Yokogawa microXL Ask
HD82B*A HD82B *A Hard Drive Module Yokogawa microXL Ask
LC81*A LC81 *A RL-Bus Interface Card Yokogawa microXL 4
LC82*A LC82 *A Redundant RL-Bus Interface Card Yokogawa microXL Ask
LC82*B LC82 *B Redundant RL-Bus Interface Card Yokogawa microXL 5
LCS*C LCS *C Loop Communications Card Yokogawa microXL 1
MF89*A MF89* A MOPS Power Supply Yokogawa microXL 2
MF89*B MF89 *B MOPS Power Supply Yokogawa microXL 2
MFCD*A MFCD *A Field Control Unit Yokogawa microXL 9
MHC*A MHC *A Signal Conditioner Nest Yokogawa microXL 9
MHM*A MHM *A Signal Conditioner Nest Yokogawa microXL 12
NP53*A NP53 *A Basic MFCU Processor Card Yokogawa microXL 2
NP53*B NP53 *B Basic MFCU Processor Card Yokogawa microXL 1
NP53*C NP53 *C Basic MFCU Processor Card Yokogawa microXL 1
NP54*B NP54 *B Enhanced MFCU Processor Card Yokogawa microXL 2
NP54*C NP54 *C Enhanced MFCU Processor Card Yokogawa microXL 19
OPK-30ES Operator Keyboard Yokogawa microXL Ask
PS84*B PS84 *B MOPL Power Supply Yokogawa microXL 4
RM81*A RM81 *A MOPS – MOPL Memory Card Yokogawa microXL 3
RS2*B RS2 *B Module Yokogawa microXL 3
AIP552 AIP552 Module Yokogawa Centum XL 2
CP21*A CP21*A Processor Card, 2 MB Yokogawa Centum XL 4
CP333D CP333D Module Yokogawa Centum XL Ask
CP99A*A CP99A *A Processor Card Yokogawa Centum XL Ask
CPL-6 CPL-6 Module Yokogawa Centum XL 4
DP97*A DP97 *A Display Processor Card Yokogawa Centum XL Ask
DP97*B DP97 *B Display Processor Card Yokogawa Centum XL Ask
DX11*A DX11 *A Duplex Control Card Yokogawa Centum XL 2
FC11*A FC11 *A Duplex Control Card Yokogawa Centum XL 2
FC311 FC311 Module Yokogawa Centum XL 1
FC81*A FC81 *A HF Bus Comm Control Card Yokogawa Centum XL 2
IP91*A Communication Module Yokogawa Centum XL 1
NC4*B NC4* B Nest Common Card Yokogawa Centum XL 14
PS33*A PS33 *A Station Power Supply Card -117Vac Yokogawa Centum XL 6
PS62*A PS62 *A Power Supply Yokogawa Centum XL 1
PS63*A PS63 *A Power Supply Unit Yokogawa Centum XL Ask
PS71*A PS71 *A Power Supply Yokogawa Centum XL 1
PW301 PW301 Power Module Yokogawa Centum XL 2
SI11*B SI11*B Station Internal Communication Card Yokogawa Centum XL 3
AS S919 Keyboard-Video Module Yokogawa microXL Ask
CP81B*B MOPS – MOPL Processor Card Yokogawa microXL 2
CP81B*C MOPS – MOPL Processor Card Yokogawa microXL 1
CP81E*A CP81E *A MOPS – MOPL Processor Card Yokogawa microXL 1
DP88*A DP88 *A MOPS – MOPL Display Card Yokogawa microXL 3
DP88*C DP88 *C MOPS – MOPL Display Card Yokogawa microXL 1
DP88*D DP88 *D MOPS – MOPL Display Card Yokogawa microXL Ask
DP88B*A DP88B *A MOPS – MOPL Display Card Yokogawa microXL 4
EN83*A EN83 *A Ethernet Network Card Yokogawa microXL 3
HD82*A HD82 *A Hard Drive Module Yokogawa microXL Ask
HD82B*A HD82B *A Hard Drive Module Yokogawa microXL Ask
LC81*A LC81 *A RL-Bus Interface Card Yokogawa microXL 4
LC82*A LC82 *A Redundant RL-Bus Interface Card Yokogawa microXL Ask
LC82*B LC82 *B Redundant RL-Bus Interface Card Yokogawa microXL 5
LCS*C LCS *C Loop Communications Card Yokogawa microXL 1
MF89*A MF89* A MOPS Power Supply Yokogawa microXL 2
MF89*B MF89 *B MOPS Power Supply Yokogawa microXL 2
MFCD*A MFCD *A Field Control Unit Yokogawa microXL 9
MHC*A MHC *A Signal Conditioner Nest Yokogawa microXL 9
MHM*A MHM *A Signal Conditioner Nest Yokogawa microXL 12
NP53*A NP53 *A Basic MFCU Processor Card Yokogawa microXL 2
NP53*B NP53 *B Basic MFCU Processor Card Yokogawa microXL 1
NP53*C NP53 *C Basic MFCU Processor Card Yokogawa microXL 1
NP54*B NP54 *B Enhanced MFCU Processor Card Yokogawa microXL 2
NP54*C NP54 *C Enhanced MFCU Processor Card Yokogawa microXL 19
OPK-30ES Operator Keyboard Yokogawa microXL Ask
PS84*B PS84 *B MOPL Power Supply Yokogawa microXL 4
RM81*A RM81 *A MOPS – MOPL Memory Card Yokogawa microXL 3
RS2*B RS2 *B Module Yokogawa microXL 3
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